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Re: [Qemu-devel] usb_packet_complete: Assertion ... failed


From: Jan Kiszka
Subject: Re: [Qemu-devel] usb_packet_complete: Assertion ... failed
Date: Sat, 23 Jun 2012 11:41:01 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666

On 2012-06-23 11:29, Erik Rull wrote:
> Jan Kiszka wrote:
>> Hi Gerd,
>>
>> I'm getting
>>
>> qemu/hw/usb/core.c:410: usb_packet_complete: Assertion
>> `((&ep->queue)->tqh_first) == p' failed.
>>
>> with a passed-through USB headset (UHCI controller). This was with
>> current QEMU git head. Known issues? Anything I can do to debug it?
>>
>> Jan
>>
> 
> Hi all,
> 
> I get this with another USB 1.1 hardware (running via UHCI) as well.
> Some weeks ago it was fine.
> @Jan: If you go back some weeks, this should work (begin of April was
> definitvely ok).

Interesting, will try to bisect if it's a regression. Don't have the
hardware here, will try next week.

> How long does it take to get the headset fully detected
> in your guest so that you can use the hardware? My USB 1.1 HW takes ~ 60
> seconds to work, after that everything is fine - during that I see
> several USB resets on the host (dmesg).

I don't see other problems so far. The device is quickly recognized and
appears to work fine otherwise. But as the assert hit frequently, I was
not able to test in details.

Thanks,
Jan

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